Rail-bobtd



E. M. DEEMS.

RAIL BOND.

APPLICATION FILED OCT-17.1918.

Patented Oct. 14, 1919.

A TTOR/VEYJ @FFIQE.

EDWARD M. DEEMS, OF FOREST HILLS, NEW YORK.

RAIL-BOND.

unease.

Application filed. October 17, 1918.

To all whom it may concern:

Be it known that I, EDWARD M. DEEMS, a citizen of the United States, and resident of Forest Hills, in the county of Queens, State of New York, have invented certain new and useful Improvements in Bail- Bonds, of which the following is a specification.

This invention relates to improvements in rail bonds and has for its principal object the provision of means for dampening or preventing vibrations of the bonding wires at the point of junction of the wires with the bonding pins.

A further object of the invention is to provide a housing for protecting the joints between the pins and the rails and the joints between the bonding wires and the pins.

In the drawings, Figure 1 is a plan view, partly in horizontal section, showing a rail bond embodying the invention;

Fig. 2 is a detail vertical section on the line IIII of Fig. 1; and

Fig. 3 is a detail vertical section on the line IIIIII of Fig. 1.

Referring to the various parts by numerals, 1 designates the abutting ends of the rails and 2 designates the bonding pins. The bonding pins 2 are tapered, as shown, and are driven through apertures 3 in the webs 4: of the rails 1. Each of the pins 2 is formed with two longitudinally eXtending grooves 5 at opposite sides thereof adapted to receive the ends of two bonding wires 6. When the pins 2 are driven into the apertures 3 the ends of the wires 6 are tightly clamped in the grooves 5 and between the pins and the walls of the apertures 3, in the well-known manner.

In practice it has been found that the vibrations set up in the bonding wires 6 by the passage of trains over the rails tends to crystallize and rupture the bonding wires at the point where the soft metal wires join the rails. To prevent such vibrations, and to protect the bond from deterioration due to the action of the elements at the junction thereof with the rails, sleeves 7, of relatively soft steel are threaded on the bonding wires prior to the connection of the wires with the rails, and are subsequently driven or forced on the projecting tapered ends of the pins 2 until the inner ends of said sleeves closely bearagainst the adjacent face of Specification of Letters Patent.

Patented Oct. 14, 1919.

Serial No. 258,574.

the web 4 of the rail. The inner ends of the sleeves 7 are expanded somewhat when they are forced over the tapered ends of the pins 2 and thus are tightly fixed thereon. The sleeves are of such diameter that they frictionally and closely engage the outsides 1 of the wires 6 throughout the length of the sleeves.

This frictional engagement of the curved inner sides of the soft metal sleeves with the wires serves to efiectually dampen vibrations of the wires and to prevent the transmission of such vibrations along the wires to the junction of the wires with the bonding pins.

The forcing of the soft metal sleeve 7 against the web 4: of the rail forms a substantially water-tight closure between the rail and the inner end of the .sleeve about the joint between the pin 2 and the rail, and, as the sleeve projects a substantial distance beyond the end of the pin, the bond is protected from the action of the elements both at the junction of the wires with the pin and at the joint between the pin and the rail.

What I claim is:

1. The combination with two abutting railway rails, of bonding pins extending through apertures in said rails and projecting beyond the sides of the rails at one end, bonding wires held at their ends to said rails, by said pins, and sleeves of relatively soft metal embracing and frictionally held tothe projecting ends of said pinsand frictionally engaging said wires, one end of each sleeve abutting closely against the adjacent side of the rail and the opposite ends of said sleeves projecting beyond the ends of said pins.

2. The combination with two abutting railway rails, of bonding pins extending through apertures in said rails and projecting beyond the sides of the rails at one end, bonding wires held at their ends to the rails by said pins, and sleeves surrounding and frictionally engaging the wires adjacent the junction thereof with the bonding pins, said sleeves being supported at their inner ends on the projecting ends of the bonding ms. p In testimony whereof I hereunto affix my signature.

EDWARD M. DEEMS.

Qopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

